Tension adjustment structure of boxing training device

ABSTRACT

A tension adjustment structure of a boxing training device contains: a base, at least one control module for controlling a tension of a spring, and an impact module. The base includes a first fitting tube and a first screwing element. The impact module includes a coupling stem. The at least one control module includes a first support post, the spring, a second support post, a second fitting tube, and a second screwing element. The coupling stem is inserted through the first support post and the second fitting tube, and the second screwing element is screwed into a locking orifice of the first support post to fix the coupling stem in the first support post and the second fitting tube. The spring is partially fitted on the first and second support posts, and a height of each of the first support post and the second support post is adjustable.

FIELD OF THE INVENTION

The present invention relates to a tension adjustment structure for aboxing training device which is capable of adjusting a height of thesecond support post, the tension of the spring, and a gravity center ofthe tension adjustment structure.

BACKGROUND OF THE INVENTION

A conventional elasticity adjustment structure of physical trainingdevice is disclosed in U.S. Pat. No. 8,931,767 and contains: a base, anelastic buffer area formed on the base, a spring or a rubberaccommodated in the elastic buffer area, wherein the spring is fitted ona column of the elastic buffer area.

When a number of coils of the spring increases, the column is adjustedto move downward and bounces upward by using the spring. When a numberof coils of the spring decreases, the column bounces quickly, the springhas a using fatigue after a period of using time.

The present invention has arisen to mitigate and/or obviate theafore-described disadvantages.

SUMMARY OF THE INVENTION

The primary aspect of the present invention is to provide a tensionadjustment structure for a boxing training device which is capable ofadjusting a height of the second support post, the tension of thespring, and a gravity center of the tension adjustment structure.

To obtain the above aspect, a tension adjustment structure for a boxingtraining device provided the present invention contains: a base, atleast one control module for controlling a tension of a spring, and animpact module.

The at least one control module is connected between the base and theimpact module.

The base includes a first fitting tube and a first screwing element, theimpact module includes a coupling stem extending from a bottom of theimpact module, and the at least one control module includes a firstsupport post, the spring, a second support post, a second fitting tube,and a second screwing element.

The coupling stem of the impact module is inserted through the firstsupport post and the second fitting tube, and the second screwingelement is screwed into a locking orifice of the first support post soas to fix the coupling stem in the first support post and the secondfitting tube. The spring is partially fitted on the first support postand the second support post, and a height of each of the first supportpost and the second support post is adjustable to adjust a tension ofthe spring and a gravity center of the tension adjustment structure.

Preferably, the base includes a connection portion formed on a centerthereof, and the base includes the first fitting tube connected on theconnection portion.

Preferably, the first support post and the second support post arehollow, and the spring is internally formed on the first support postand the second support post.

Preferably, the impact module includes a body and a coupling stem,wherein the body is hit by a user, and the coupling stem is connected ona bottom of the body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing the exploded components of atension adjustment structure for a boxing training device according to apreferred embodiment of the present invention.

FIG. 2 is a perspective view showing the assembly of the tensionadjustment structure for the boxing training device according to thepreferred embodiment of the present invention.

FIG. 3 is a cross sectional view showing the assembly of a part of thetension adjustment structure for the boxing training device according tothe preferred embodiment of the present invention.

FIG. 4 is another cross sectional view showing the assembly of a part ofthe tension adjustment structure for the boxing training deviceaccording to the preferred embodiment of the present invention.

FIG. 5 is a perspective view showing the operation of the tensionadjustment structure for the boxing training device according to thepreferred embodiment of the present invention.

FIG. 6 is another perspective view showing the assembly of the tensionadjustment structure for the boxing training device according to thepreferred embodiment of the present invention.

FIG. 7 is also another perspective view showing the assembly of thetension adjustment structure for the boxing training device according tothe preferred embodiment of the present invention.

FIG. 8 is a side plan view showing the assembly of the tensionadjustment structure for the boxing training device according to thepreferred embodiment of the present invention.

FIG. 9 is another side plan view showing the assembly of the tensionadjustment structure for the boxing training device according to thepreferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to FIGS. 1 to 9, a tension adjustment structure of aboxing training device according to a preferred embodiment of thepresent invention comprises: a base 1, at least one control module 2configured to control a tension of a spring 22, and an impact module 3.

Referring to FIGS. 1 to 9, the base 1 is configured to support the atleast one control module 2 and the impact module 3, wherein the base 1includes a connection portion 11 formed on a center thereof, and thebase 1 includes a first fitting tube 12 connected on the connectionportion 11 by using at least one screw bolts, as illustrated in FIG. 1.

As shown in FIGS. 1 and 2, the at least one control module 2 includes afirst support post 21, the spring 22, a second support post 23, a secondfitting tube 24, and a second screwing element 25. The first supportpost 21 and the second support post 23 are hollow, the spring 22 isintegrally formed on the first support post 21 and the second supportpost 23, as shown in FIG. 3, wherein the second support post 23 isinserted into and is fixed in the first fitting tube 12 by ways of afirst screwing element 13, as illustrated in FIGS. 3 and 5-7, a heightof the second support post 23 is adjustable based on using requirements,and the tension of the spring 22 and a gravity center of the tensionadjustment structure are adjustable.

With reference to FIGS. 1 and 2, the impact module 3 includes a body 31and a coupling stem 32, wherein the body 31 is hit by a user, and thecoupling stem 32 is connected on a bottom of the body 31, as illustratedin FIGS. 2, 4, 6, and 7, wherein the coupling stem 32 is insertedthrough the first support post 21 and the second fitting tube 24, andthe second screwing element 25 is screwed into a locking orifice 211 ofthe first support post 21 so as to fix the coupling stem 32 in the firstsupport post 21 and the second fitting tube 24. In addition, a height ofthe first support post 21 is adjustable to obtain a desired bouncingspeed and force of the impact module 3.

Referring to FIGS. 4-7, in operation, the first support post 21 isadjusted to a desired height along the second support post 23 and isfixed on the second support post 23 by using the first screwing element13 and the second screwing element 25, such that the user hits theimpact module 3 to swing and bounce reciprocately at three swingingpositions by using the spring 22.

As shown in FIG. 8, the first support post 21 and the second supportpost 23 of the at least one control module 2 are respectively liftedupward and are fixed by using the first screwing element 13 and thesecond screwing element 25 so that the coupling stem 32 and the firstsupport post 21 are driven by the body 31 to bend the spring 22 afterthe body 31 is hit by the user. In the meantime, the gravity center ofthe tension adjustment structure is high, and the tension of the springis small. Thereby, the impact module 3 bounces greatly so that the userhits and shirks the impact module 3.

As illustrated in FIG. 9, the first support post 21 and the secondsupport post 23 of the at least one control module 2 are respectivelydescend downward and are fixed by using the first screwing element 13and the second screwing element 25 so that the coupling stem 32 and thefirst support post 21 are driven by the body 31 to bend the spring 22after the body 31 is hit by the user. In the meantime, the gravitycenter of the tension adjustment structure is low, and the tension ofthe spring 22 is large. Thereby, the impact module 3 bounces slightly sothat the user hits the impact module 3 only.

Accordingly, the user exactly exercises boxing skills by using thetension adjustment structure of the boxing training device.

When the impact module 3 is adjusted to 150 cm and the second supportpost 23 is moved away from the base 1, the impact module 3 bouncesgreatly. When the impact module 3 is adjusted to 150 cm and the secondsupport post 23 is moved close to the base 1, the impact module 3bounces slightly. Accordingly, the impact module 3 bounces greatly orslightly, when the impact module 3 is adjusted to a fixed height.Preferably, the first support post 21, the spring 22, and the secondsupport post 23 are fixed by ways of the first fitting tube 12, thefirst screwing element 13, the second fitting tube 24, and the secondscrewing element 25, thus avoiding a height limitation and a fatigue ofthe spring 22.

No matter the first support post 21 and the second support post 23 areadjusted to any heights, the spring 22 has a fixed tension.

While the preferred embodiments of the invention have been set forth forthe purpose of disclosure, modifications of the disclosed embodiments ofthe invention as well as other embodiments thereof may occur to thoseskilled in the art. Accordingly, the appended claims are intended tocover all embodiments which do not depart from the spirit and scope ofthe invention

What is claimed is:
 1. A tension adjustment structure of a boxingtraining device comprising: a base, at least one control moduleconfigured to control a tension of a spring, and an impact module, theat least one control module being connected between the base and theimpact module; wherein the base includes a first fitting tube and afirst screwing element, the impact module includes a coupling stemextending from a bottom of the impact module, and the at least onecontrol module includes a first support post, the spring, a secondsupport post, a second fitting tube, and a second screwing element;wherein the coupling stem of the impact module is inserted through thefirst support post and the second fitting tube, and the second screwingelement is screwed into a locking orifice of the first support post soas to fix the coupling stem in the first support post and the secondfitting tube; wherein the spring is partially fitted on the firstsupport post and the second support post, and a height of each of thefirst support post and the second support post is adjustable to adjust atension of the spring and a gravity center of the tension adjustmentstructure.
 2. The tension adjustment structure as claimed in claim 1,wherein the base includes a connection portion formed on a centerthereof, and the base includes the first fitting tube connected on theconnection portion.
 3. The tension adjustment structure as claimed inclaim 1, wherein the first support post and the second support post arehollow, and the spring is internally formed on the first support postand the second support post.
 4. The tension adjustment structure asclaimed in claim 1, wherein the impact module includes a body and acoupling stem, wherein the body is hit by a user, and the coupling stemis connected on a bottom of the body.